Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

STEPHANIE MESSINA PA
NPI 1912202987
Physician Assistant in San Francisco, CA

Active since January 21, 2011PECOS Enrolled
2340 CLAY ST FL 6, SAN FRANCISCO, CA 94115(424) 444-7399(424) 253-0814 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Mar 30, 2026, Apr 19, 2021 (2 updates tracked since 2021).

About Stephanie Messina Pa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHANIE MESSINA PA (NPI 1912202987) is an individual physician assistant in San Francisco, California, licensed in California (PA21409) and active in the NPI registry since January 2011. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1912202987
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameSTEPHANIE MESSINACredential: PA
Location Address2340 CLAY ST FL 6San Francisco, CA 94115-1932
Mailing Address2340 Clay St Fl 6San Francisco, CA 94115-1932 · (424) 444-7399 · Fax (424) 253-0814
Fax(424) 253-0814
Sole ProprietorNo
Enumeration DateJanuary 21, 2011
Last NPPES UpdateJune 30, 20262 updates tracked since enumeration
NPPES CertifiedJune 30, 2026
NPI 1912202987 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in CA · PA21409
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

2340 CLAY ST FL 6, San Francisco, CA 94115

Secondary Practice Locations 3

Location 19834 Genesee Ave Ste 411LA Jolla, CA 92037-1264 · Phone (424) 444-7399 · Fax (424) 253-0814
Location 29025 Wilshire Blvd Ste 202Beverly Hills, CA 90211-1825 · Phone (424) 444-7399 · Fax (424) 253-0814
Location 32250 Hayes StSan Francisco, CA 94117-1078 · Phone (424) 444-7399 · Fax (424) 253-0814

Medicare Participation & PECOS Enrollment Status

Stephanie Messina is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94115 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $104.51
  • Minimum New Patient Price $69
  • Maximum New Patient Price $202.35
  • Average New Patient Copayment $26.12
  • Minimum New Patient Copayment $17.25
  • Maximum New Patient Copayment $50.58

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $84.91
  • Minimum Established Patient Price $23.44
  • Maximum Established Patient Price $166.46
  • Average Established Patient Copayment $21.22
  • Minimum Established Patient Copayment $5.86
  • Maximum Established Patient Copayment $41.61

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for STEPHANIE MESSINA PA

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Other Providers at the Same Location


The following 15 providers are registered at the same or a nearby location.

Internal Medicine (Rheumatology)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Specialist
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Clinic/Center (Primary Care)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine (Gastroenterology)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Dietitian, Registered
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Physician Assistant
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine (Rheumatology)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Nurse Practitioner (Family)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Physician Assistant
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
Nurse Practitioner (Family)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1912202987, enumerated as an "individual" on January 21, 2011.

The provider is located at 2340 CLAY ST FL 6 SAN FRANCISCO, CA 94115 and the phone number is (424) 444-7399.

Physician Assistant with taxonomy code 363A00000X.